This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A102546 #6 Jan 10 2017 10:54:15 %S A102546 10,40,60,70,120,130,160,180,190,280,300,330,370,400,420,480,510,550, %T A102546 570,580,610,630,670,700,790,810,850,900,960,990,1030,1050,1060,1170, %U A102546 1180,1210,1230,1240,1260,1300,1390,1440,1510,1540,1560,1590,1600,1630,1690,1740,1830,1840,1870 %N A102546 Numbers t such that t1 is prime and t is a multiple of 10. %H A102546 Harvey P. Dale, <a href="/A102546/b102546.txt">Table of n, a(n) for n = 1..1000</a> %e A102546 If t=10, then t1 = 101 (prime). %e A102546 If t=180, then t1 = 1801 (prime). %e A102546 If t=420, then t1 = 4201 (prime). %t A102546 Select[10*Range[200],PrimeQ[10#+1]&] (* _Harvey P. Dale_, Jan 10 2017 *) %Y A102546 Cf. A024912. %K A102546 nonn,base %O A102546 1,1 %A A102546 _Parthasarathy Nambi_, Feb 24 2005